04519041 is referenced by 67 patents and cites 5 patents.

A method and apparatus relating to the real time automatic detection and classification of characteristic type surface imperfections occurring on the surfaces of material of interest such as moving hot metal slabs produced by a continuous steel caster. A data camera transversely scans continuous lines of such a surface to sense light intensities of scanned pixels and generates corresponding voltage values. The voltage values are converted to corresponding digital values to form a digital image of the surface which is subsequently processed to form an edge-enhanced image having scan lines characterized by intervals corresponding to the edges of the image. The edge-enhanced image is thresholded to segment out the edges and objects formed by the edges are segmented out by interval matching and bin tracking. Features of the objects are derived and such features are utilized to classify the objects into characteristic type surface imperfections.

Title
Real time automated inspection
Application Number
6/374373
Publication Number
4519041
Application Date
May 3, 1982
Publication Date
May 21, 1985
Inventor
Franz W Ulrich
Minneapolis
MN, US
Bindinganavle R Suresh
New Brighton
MN, US
John E Overland
Plymouth
MN, US
Tod S Levitt
Minneapolis
MN, US
Richard A Fundakowski
Saint Paul
MN, US
Karl M Fant
Minneapolis
MN, US
Agent
Wayne B Easton
Charles G Mersereau
Assignee
Honeywell
MN, US
IPC
G06G 7/48
G06F 15/46
G06F 15/20
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